Canon card LC-31

The Canon card LC-31
is
an arithmetic
calculator with 8 digits precision
and
algebraic logic.
It has
6 functions, 24 keys
and
one of the early LCD (liquid crystal) displays which incorporated a yellow filter. The power source is
2xAAA batteries.
The calculator was manufactured in Japan.

From the name "card" you might think this was credit card sized and thin. In fact it is much the same size as other calculators of the this type.

The yellow filter on the LCD display indicates that this is one of the early LCD models.​